Co-op is a workbench for the definition and use of composition operators: abstractions that can encapsulate standard solutions such as coding idioms, design patterns and composition techniques, and can later be (re-) used just like library classes.


  • A language for expressing abstraction techniques, potentially involving relations between multiple objects
  • The abstraction techniques are first-class, and can be re-used and refined gradually
  • Application developers can now easily instantiate coding idiom, design patterns, and composition relations.
  • Ideal for prototyping new composition techniques
  • Eclipse integration, including debugging support and command line interpreter
  • Includes several examples that demonstrate the expressiveness and flexibility

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Additional Project Details

Intended Audience

Information Technology, Science/Research, Developers

User Interface

Console/Terminal, Eclipse

Programming Language